Recently, people keep asking me if "sandwich/arbitrage is an opportunity," and my first reaction is to see which side I stand on: Are you the kind of people who can write bots? If not, then most likely what you see as an "opportunity" is actually someone else already calculating the fees they plan to deduct from your trade, just with a fancier name.

The on-chain sorting system is like a community access control; whoever swipes their card first is first, sometimes it’s not even in the order of your submission time. Recently, retail traders have been complaining that validators/miners are eating too well, and MEV is making things unfair. I can understand that too… You do a swap, the price slips a bit, and later you realize you’re basically working for someone else.

Forget it, speaking plainly: don’t see yourself as a hunter; most of the time, you’re the meat. My approach is a bit more straightforward: split small orders, don’t set too large a slippage, try to use "private" channels (at least don’t run naked in public pools), when you see unfamiliar authorization pop-ups, treat them as strangers knocking on your door—don’t open right away. That’s all for now.